Ah. I misunderstood you. I am only getting started with FB Apps (which are focused on profits). I am looking at Lookery and Social Media, but I don't know much about the earning potential. Ask me after 6 months
Do you not want to use Facebook Ads? I am a huge FB user and have only just started using FB Ads. You have the choice to pay for impressions or PPC. I use PPC and spend $3-6 a day and choose when I want those ads to be active. It's not much but I still get my "targeted traffic" and conversions. Do you spend much time on FB? Are you building your fan page or friends list up? Do you know how to use FBML Static and Html on your pages to add opt in forms on your personal page and fan page? I get a lot of people clicking through on my html and FBML boxes! Rockyou is fine but I would network there are sooo many great people on fb to sell yourself to. Goodluck
I don't think you can place facebook ads inside your actual app. I am looking to make money, not spend it. I do use FB ads to advertise my app though =]